Figure 3.
The three separate maps of China are labelled twenty eleven, twenty fifteen, and twenty twenty one. Each map shows provincial boundaries, a north arrow, a legend with six numeric value ranges plus a no data category, and a scale bar labelled zero, one hundred ninety, three hundred eighty, seven hundred sixty, one thousand one hundred forty, and one thousand five hundred twenty miles. In panel a two thousand eleven, the legend ranges are zero point zero zero zero zero one to zero point zero two nine nine zero, zero point zero two nine nine zero to zero point zero three three one zero, zero point zero three three one zero to zero point zero three seven zero zero, zero point zero three seven zero zero to zero point zero four three two zero, zero point zero four three two zero to zero point zero six eight three zero, and zero point zero six eight three zero to zero point one four four four zero. In panel b two thousand fifteen, the legend ranges are zero point zero zero zero zero one to zero point zero four nine zero zero, zero point zero four nine zero zero to zero point zero five nine zero zero, zero point zero five nine zero zero to zero point zero seven zero zero zero, zero point zero seven zero zero zero to zero point zero eight one zero zero, zero point zero eight one zero zero to zero point zero one one five zero zero, and zero point zero one one five zero zero to zero point one eight two zero zero zero. In panel c two thousand twenty one, the legend ranges are zero point zero zero zero zero one to zero point zero six six zero zero, zero point zero six six zero zero to zero point zero seven five zero zero, zero point zero seven five zero zero to zero point zero eight three zero zero, zero point zero eight three zero zero to zero point zero nine one zero zero, zero point zero nine one zero zero to zero point zero one zero five zero zero, and zero point zero one zero five zero zero to zero point one five one zero zero.Spatial distribution of the GTCI
Source: Authors’ own work